+86 21 332 827 11
Engine model 4B3.9-G2
Engine type 4 stroke, 4 cylinders in line
Displacement 3.9 L
Rated Power 27kW (42.5 Kva) @ 1500 rpm
Frequency 50Hz / 60Hz
Cooled type Radiator / water and fan
Alternator Stamford / Marathon
Cummins logo
Cummins logo
  • Product advantages
  • Cummins parts

Cummins G-Drive 4B3.9-G2 technique specification

Bore*stroke 102 * 120mm
Intake method Naturally Aspirated
Fuel systeme BYC A Pump/GAC Electronic Governor
Cooling method Fluid Cooling
Governor Type Electronic speed regulator
Reserve Power 33kW (51.8 Kva) @ 1800 rpm
Connection method SEA international standard interface
Control panel Deepsea / ComAp / Smartgen / Harsen
Lowest Starting Temp -10℃/-25℃ (without/with auxiliary system)
Starting System Electrical Starting Motor 24V/750A
Manufacturer DCEC Cummins

Cummins G-Drive 4B3.9-G2 Trade information

Warranty time 1year or 1500h
Engine Size(L*W*H): 867mm*544mm*988mm
Packing size 1260mm*980mm*1385mm
Weight net 308 Kg
Weight gross 350 Kg
Delivary port Shanghai
Marine delivary boat Masket/zhongyuan
Delivary time 15 working days
Trade termes FOB/CIF/CNF
Payement termes T/T,L/C
Mode of transport Sea transportation or air transportation

Original/genuine parts

Cummins parts | P/N: C3901306

Bushing | P/N: C3901306

Original Cummins Parts| P/N: C3929027

Crankshaft Ggear | P/N: C3929027

Genuine Cummins Parts | 3408577

Pressure Sensor | P/N: 3408577

Cummins diesel parts | P/N: LF3345

Oil Filter | P/N: LF3345

Cummins parts guarantee of engine durability and reliability

Cummins parts
Cummins parts
Cummins parts

Professional configuration, best quality

CCEC Cummins production plant

Professional configuration, best quality

Advanced design and sophisticated manufacturing, adapt to a variety of harsh working conditions, high strength, strong ability to work under heavy loads.

The cylinder block and cylinder head adopt an integrated design to prevent the occurrence of engine water and oil leakage. The parts are about 40% less than other similar engines, and the failure rate is greatly reduced.

Using forged steel camshaft and crankshaft, high-strength cylinder block design, multiple parts cast on the cylinder block, high rigidity, high pressure resistance, good reliability, and longer service life.

The cylinder bore adopts a platform mesh honing design, which is perfect The geometric structure effectively prevents oil leakage, and adopts advanced technologies such as new piston ring components and gasket crimping molding to reduce oil loss.

Adopt Holset supercharger with integral wastegate valve, low-speed response and strong power, three-stage fuel filter to ensure a balanced level of particulate dispersion, protect the main components of the fuel system, and maximize the life of the engine.

Electronic control system can intelligently switch the working mode according to the environment and operating conditions, and has the functions of self-diagnosis, alarm and remote monitoring.

Don't see the parts you are looking for? Click Here and we can get it for you or send you a quote from the thousands of commonly used Cummins parts.